diff --git a/README.md b/README.md
index b26b556..7655487 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,14 @@ We don't need to worry about update or delete.
 * Import and use the controller functions in the appropiate Router
 
 # Part 4 - Database
+* https://github.com/AustinCodingAcademy/express-mongodb
+* Create a database somewhere for advanced-express-practice
+* Create a new file database.js, implement the code for MongoClient and connect()
+* Implement the mongodb client tool into your controllers for list, show, create
+* Use insertMany() for create and find() for list and show
+* How are your controllers going to get access to const db = client.db("advanced-express-practice");
+
+# Part 5 - Mongoose
 * In server/index.js, import and use mongoose. Connect to a database "advanced-express-practice" 
 * Create the mongoose models for Contact, Vehicle, Comment Product
 * CommentModel - body
diff --git a/controllers/comments.js b/controllers/comments.js
new file mode 100644
index 0000000..911cf92
--- /dev/null
+++ b/controllers/comments.js
@@ -0,0 +1,36 @@
+let comments = require("../comments")
+
+//get - all comments
+exports.list = function list(req, res) {
+    return res.json(comments);
+}
+
+//get - one comment
+exports.show = function list(req, res) {
+    let comment = comments.find(p=>p._id === Number(req.params.id));
+    res.json(comment)
+}
+
+//post
+exports.create = function list(req, res) {
+    let id = comments.length + 1;
+    let body = req.body.body;
+    let postId = req.body.postId;
+    comments.push({"_id":id, "body":body, "postId":postId})
+    res.json(comments);
+}
+
+//put
+exports.update = function list(req, res) {
+    let comment = comments.find(p=>p._id === Number(req.params.id));
+    comment.body = body.body;
+    comment.postId = body.postId;
+    res.json(comment)
+}
+
+//delete
+exports.remove = function list(req, res) {
+    let comment = comments.find(p=>p._id === Number(req.params.id));
+    comment.isActive = false;
+    res.send("deleted");
+}
\ No newline at end of file
diff --git a/controllers/contacts.js b/controllers/contacts.js
new file mode 100644
index 0000000..5ab478d
--- /dev/null
+++ b/controllers/contacts.js
@@ -0,0 +1,38 @@
+let contacts = require("../contacts");
+
+//get - all contacts
+exports.list = function list(req, res) {
+    return res.json(contacts);
+}
+
+//get - one contact
+exports.show = function list(req, res) {
+    let contact = contacts.find(p=>p._id === Number(req.params.id));
+    res.json(contact)
+}
+
+//post
+exports.create = function list(req, res) {
+    let id = contacts.length + 1;
+    let name = req.body.name;
+    let occupation = req.body.occupation;
+    let avatar = req.body.avatar;
+    contacts.push({"_id":id, "name":name, "occupation":occupation, "avatar":avatar})
+    res.json(contacts);
+}
+
+//put
+exports.update = function list(req, res) {
+    let contact = contacts.find(p=>p._id === Number(req.params.id));
+    contact.name = body.name;
+    contact.occupation = body.occupation;
+    contact.avatar = body.avatar;
+    res.json(contact)
+}
+
+//delete
+exports.remove = function list(req, res) {
+    let contact = contacts.find(p=>p._id === Number(req.params.id));
+    contact.isActive = false;
+    res.send("deleted");
+}
\ No newline at end of file
diff --git a/controllers/products.js b/controllers/products.js
new file mode 100644
index 0000000..13f8489
--- /dev/null
+++ b/controllers/products.js
@@ -0,0 +1,36 @@
+let products = require("../products");
+
+//get - all products
+exports.list = function list(req, res) {
+    return res.json(products);
+}
+
+//get - one product
+exports.show = function list(req, res) {
+    let product = products.find(p=>p._id === Number(req.params.id));
+    res.json(product)
+}
+
+//post
+exports.create = function list(req, res) {
+    let id = products.length + 1;
+    let name = req.body.name;
+    let description = req.body.description;
+    products.push({name, description, "_id":id, "Product Name":name, "Product desc":description})
+    res.json(products);
+}
+
+//put
+exports.update = function list(req, res) {
+    let product = products.find(p=>p._id === Number(req.params.id));
+    product.name = body.name;
+    product.description = body.description;
+    res.json(product)
+}
+
+//delete
+exports.remove = function list(req, res) {
+    let product = products.find(p=>p._id === Number(req.params.id));
+    product.isActive = false;
+    res.send("deleted");
+}
\ No newline at end of file
diff --git a/controllers/vehicles.js b/controllers/vehicles.js
new file mode 100644
index 0000000..e46da4a
--- /dev/null
+++ b/controllers/vehicles.js
@@ -0,0 +1,40 @@
+let vehicles = require("../vehicles");
+
+
+//get - all vehicles
+exports.list = function list(req, res) {
+    return res.json(vehicles);
+}
+
+//get - one vehicle
+exports.show = function list(req, res) {
+    let vehicle = vehicles.find(p=>p._id === Number(req.params.id));
+    res.json(vehicle)
+}
+
+//post
+exports.create = function list(req, res) {
+    let id = vehicles.length + 1;
+    let year = req.body.year;
+    let make = req.body.make;
+    let model = req.body.model;
+    vehicles.push({year, make, model, "_id":id, "Vehicle Year":year, "Vehicle Make":make, "Vehicle Model":model})
+    res.json(vehicles);
+}
+
+//put
+exports.update = function list(req, res) {
+    let vehicle = vehicles.find(p=>p._id === Number(req.params.id));
+    vehicle.year = body.year;
+    vehicle.make = body.make;
+    vehicle.model = body.model;
+    res.json(vehicle)
+}
+
+//delete
+exports.remove = function list(req, res) {
+    let vehicle = vehicles.find(p=>p._id === Number(req.params.id));
+    vehicle.isActive = false;
+    res.send("deleted");
+}
+
diff --git a/index.js b/index.js
index 3d47752..b648840 100644
--- a/index.js
+++ b/index.js
@@ -1,17 +1,20 @@
 let express = require("express");
-let comments = require("./comments");
-let products = require("./products");
-let vehicles = require("./vehicles");
-let contacts  = require("./contacts");
+let comments = require("./routes/comments");
+let contacts  = require("./routes/contacts");
+let products = require("./routes/products");
+let vehicles = require("./routes/vehicles");
 
 const bodyParser = require("body-parser");
 const app = express();
+
 app.use(bodyParser.json());
 app.use(express.static("public"));
+app.use(comments);
+app.use(contacts);
+app.use(products);
+app.use(vehicles);
 
 const thePort = 3001;
-
-
 app.listen(thePort, (err) => {
  if (err) {
    return console.log("Error", err);
diff --git a/routes/comments.js b/routes/comments.js
new file mode 100644
index 0000000..49b8c9a
--- /dev/null
+++ b/routes/comments.js
@@ -0,0 +1,11 @@
+const express = require("express");
+const router = express.Router();
+const {list,show,create} = require("../controllers/comments");
+
+
+//comments
+router.get('/comments', list);
+router.get('/comments/:id', show);
+router.post('/comments/', create);
+
+module.exports = router;
diff --git a/routes/contacts.js b/routes/contacts.js
new file mode 100644
index 0000000..759c57c
--- /dev/null
+++ b/routes/contacts.js
@@ -0,0 +1,10 @@
+const express = require("express");
+const router = express.Router();
+const {list,show,create} = require("../controllers/contacts");
+
+//contacts
+router.get('/contacts', list);
+router.get('/contacts/:id', show);
+router.post('/contacts/', create);
+
+  module.exports = router;
\ No newline at end of file
diff --git a/routes/products.js b/routes/products.js
new file mode 100644
index 0000000..9055fd7
--- /dev/null
+++ b/routes/products.js
@@ -0,0 +1,11 @@
+const express = require("express");
+const router = express.Router();
+const {list,show,create} = require("../controllers/products");
+
+//products
+router.get('/products', list);
+router.get('/products/:id', show);
+router.post('/products/', create);
+  
+
+module.exports = router;
diff --git a/routes/vehicles.js b/routes/vehicles.js
new file mode 100644
index 0000000..c459291
--- /dev/null
+++ b/routes/vehicles.js
@@ -0,0 +1,12 @@
+const express = require("express");
+const router = express.Router();
+const {list,show,create} = require("../controllers/vehicles");
+
+
+//vehicles
+router.get('/vehicles', list);
+router.get('/vehicles/:id', show);
+router.post('/vehicles/', create);
+
+
+module.exports = router;